CN219954073U - Rear shock-absorbing device with parallel double dampers for electric vehicle - Google Patents

Abstract

The utility model relates to a parallel double-damper rear shock-absorbing device of an electric vehicle, which solves the technical defects of low loading capacity, poor riding comfort and stability and large lateral swing amplitude caused by insufficient supporting force and poor shock-absorbing effect of a single-spring rear shock absorber of the existing two-wheel electric vehicle on a vehicle body, and adopts the following technical scheme: one ends of the two cylinders are connected on the upper connecting plate or the lower connecting plate in parallel, one ends of the two connecting rods are movably inserted in the inner cavity of the cylinder through telescopic holes respectively and are in sliding connection with the inner wall of the cylinder through piston bodies, the two tightness adjusting nuts are adjustably connected on the outer wall of the cylinder through adjusting thread positions arranged on the cylinder respectively, the two damping springs are movably sleeved outside the cylinder and the connecting rods respectively, one ends of the damping springs are abutted on the tightness adjusting nuts, and the other ends of the damping springs are abutted on the lower connecting plate or the upper connecting plate. The device provided by the utility model has the advantages of double-spring damper, better shock-absorbing effect, improved rigidity of connection between the damper and the vehicle body, improved riding comfort and stability, and stronger bearing capacity.

Description

Rear shock-absorbing device with parallel double dampers for electric vehicle

Technical Field

The utility model relates to the technical field of electric vehicle spare and accessory parts, in particular to a parallel double-damper rear shock-absorbing device of an electric vehicle.

Background

The two-wheeled electric vehicle has low requirements on the loading performance under the household condition, and if the two-wheeled electric vehicle is specially used for pulling and loading, the rear shock absorber is required to have higher bearing capacity and supporting force, so that the safety of a driver during loading riding is ensured. However, the rear shock absorber of the existing two-wheeled electric vehicle is mostly a single-spring shock absorber, the shock filtering effect of the rear shock absorber is inferior to that of a hydraulic shock absorber or a nitrogen shock absorber, the rebound and the lateral swing of the rear shock absorber are large in the heavy-load running process, the supporting force of the rear shock absorber to the vehicle is insufficient, the riding comfort and the stability of the vehicle are poor, the bearing capacity is low, and the safety is poor.

Disclosure of Invention

In summary, the utility model aims to solve the technical problems of low loading capacity, poor riding comfort and stability and large lateral swing amplitude of the electric vehicle caused by insufficient supporting force and poor vibration filtering effect of the single-spring rear shock absorber of the existing two-wheel electric vehicle, and provide the parallel double-damper rear shock absorbing device with relatively low cost, good vibration filtering effect and strong lateral supporting force of the vehicle body.

In order to solve the technical defects, the utility model adopts the technical scheme that the parallel double-damper rear shock absorbing device of the electric vehicle is correspondingly connected to two sides of a frame and a fork type rear rocker arm of the electric vehicle, and is characterized by comprising the following components:

the upper yoke plate is fixedly connected to one side of the frame main body through an upper lifting lug seat;

the lower yoke plate is fixedly connected to the same side of the fork-type rear rocker arm through a lower lifting lug seat;

two cylinders, one end of which is connected with the upper connecting plate or the lower connecting plate in parallel, the outer wall of the end is provided with an adjusting thread, and the other end is provided with a telescopic hole communicated with the inner cavity of the cylinder;

one end of each connecting rod is movably inserted into the inner cavity of the cylinder body through the telescopic hole, and is in sliding connection with the inner wall of the cylinder body through the piston body, and the other end of each connecting rod is connected with the lower connecting plate or the upper connecting plate in parallel;

the two tightness adjusting nuts are respectively connected to the cylinder body through the adjusting threads and can adjust the position along the long axis direction of the cylinder body;

two damping springs are respectively and movably sleeved outside the cylinder body and the connecting rod, one end of each damping spring is elastically abutted on the elastic adjusting nut, and the other end of each damping spring is elastically abutted on the lower connecting plate or the upper connecting plate.

Further, the other end of the damping spring is indirectly abutted on the lower yoke plate or the upper yoke plate through the damping rubber cushion.

Further, the method also comprises the following steps:

the protection sleeve is coaxially and fixedly connected with the other end part of the connecting rod, the bottom of the protection sleeve is movably abutted on the cushioning rubber cushion to be used as a retaining structure, and the opening end of the protection sleeve is movably sleeved outside the cylinder body and the connecting rod and is positioned in the caliber of the damping spring;

connecting rod fixing screw, coaxial line set firmly in outside the back cover end of protection sleeve, through connecting rod lock nut with lower yoke plate or last yoke plate detachably connect, cooperate, be equipped with on lower yoke plate or the last yoke plate:

the connecting rod fixing hole positions are correspondingly positioned on two sides of the lower lifting lug seat or the upper lifting lug seat and are used for being inserted into the connecting rod fixing screw rod.

Further, the position of the opening end of the protection sleeve is not higher than the piston body of the connecting rod, and when the damping spring is compressed to the limit position, the opening end of the protection sleeve does not interfere with the tightness adjusting nut.

Further, the cylinder body on be equipped with:

the oil filling hole is positioned on the side wall of one end of the cylinder body, is communicated with the inner cavity of the cylinder body and is used for filling lubricating oil into the cylinder body;

and the oil hole plug is plugged on the oil injection hole and is used for preventing the lubricating oil from leaking.

Further, the method also comprises the following steps:

and the joint bearings are respectively embedded into the lifting lugs of the upper lifting lug seat and the lower lifting lug seat.

Further, the method also comprises the following steps:

the oil seal is arranged in the cylinder body and is blocked between the telescopic hole and the connecting rod.

Further, the cylinder body on be equipped with:

barrel fixing screw, fix in the barrel outside the one end coaxially, through barrel lock nut with last yoke plate or lower yoke plate detachably connect, cooperate, be equipped with on last yoke plate or the lower yoke plate:

the cylinder fixing hole positions are correspondingly positioned on two sides of the upper lifting lug seat or the lower lifting lug seat, one end of the cylinder fixing hole positions facing the cylinder is of a countersunk structure and is used for limiting and clamping the end part of the cylinder and plugging the cylinder fixing screw.

Compared with the prior art, the rear shock-absorbing device has the beneficial effects that: compared with the existing single-spring shock absorber, the parallel double-damper rear shock absorber has better shock filtering effect, stronger supporting capability on a vehicle, contribution to improving the rigidity of connection of a fork type rear rocker arm and a frame, reducing the rolling and swinging amplitude of the vehicle, obviously improving riding comfort and stability and higher safety. Meanwhile, the rear shock absorption of the parallel double-damper structure obviously improves the bearing capacity of the vehicle, so that the electric vehicle can be specially used for pulling and carrying goods.

The rear shock absorbing device has a simple structure, is convenient to assemble and disassemble, and is beneficial to the production assembly and the later maintenance of vehicles. Meanwhile, the device has low manufacturing cost, and is beneficial to reducing the manufacturing cost and the use cost of the whole vehicle. In addition, the damping size of the device can be adjusted through the tightness adjusting nut, and the damping spring can be further compressed through the tightness adjusting nut when the load is large, so that the rear damping is increased to improve the bearing capacity of the vehicle; when the load is relatively small, the damping spring can be properly loosened by loosening and tightening the adjusting nut, so that the rear damping is reduced to improve the shock filtering capacity of the vehicle, and the vehicle damping device is simple to operate and convenient to use.

Drawings

FIG. 1 is a schematic view of the overall structure of the device of the present utility model;

FIG. 2 is an exploded view of the overall structure of the device of the present utility model;

fig. 3 is a schematic cross-sectional view of the device of the present utility model.

In the figure: 1. the upper yoke plate, 11, the upper lifting lug seat, 12, the cylinder fixing hole site, 13, the cylinder locking nut, 2, the lower yoke plate, 21, the lower lifting lug seat, 22, the connecting rod fixing hole site, 3, the cylinder, 31, the telescopic hole, 32, the adjusting screw thread, 33, the oil filling hole, 34, the oil hole plug, the hydraulic cylinder comprises a cylinder body fixing screw rod 35, a connecting rod 4, a piston body 41, a protection sleeve 42, a connecting rod fixing screw rod 43, a connecting rod locking nut 44, a tightness adjusting nut 5, a damping spring 6, a damping rubber cushion 7, a joint bearing 8 and an oil seal 9.

Detailed Description

In order that those skilled in the art will better understand the technical solution of the present utility model, the following description will further illustrate the present utility model by way of specific examples, and the specific embodiments adopted in the following examples are only some preferred embodiments of the technical solution of the present utility model, not limiting the present utility model.

Referring to fig. 1 to 3, the rear damper assembly for an electric vehicle according to the present utility model includes a lath-shaped upper yoke plate 1 fixedly coupled to one side of a frame body of the electric vehicle through an upper shackle seat 11, a lower yoke plate 2 fixedly coupled to the same side of a fork-type rear swing arm of the electric vehicle through a lower shackle seat 21, and two spring dampers connected in parallel between the upper yoke plate 1 and the lower yoke plate 2. The spring damper comprises two cylinder bodies 3, the upper ends of which are fixedly connected with the bottom of the upper connecting plate 1 in parallel, two connecting rods 4, the lower ends of which are fixedly connected with the top of the lower connecting plate 2 in parallel, the upper parts of the two connecting rods 4 are movably inserted into the inner cavity of the cylinder body 3 through telescopic holes 31 arranged at the bottom end of the cylinder body 3 respectively, and the upper ends of the connecting rods are slidably connected with the inner wall of the cylinder body 3 through piston bodies 41 arranged at the upper ends of the connecting rods. The two tightness adjusting nuts 5 are fixedly connected to the cylinder body 3 through adjusting threads 32 arranged on the outer wall of the upper end part of the cylinder body 3, and the two tightness adjusting nuts 5 do not interfere with each other and can be used for adjusting the position along the long axis direction of the cylinder body 3. Two damping springs 6 are movably sleeved outside the cylinder 3 and the connecting rod 4 respectively, the upper ends of the damping springs 6 are elastically abutted on the tightness adjusting nut 5, and the lower ends of the damping springs are elastically abutted on the lower yoke plate 2.

Compared with the existing single-spring shock absorber, the parallel double-damper rear shock absorber has better shock absorbing effect, stronger supporting capability on a vehicle, contribution to improving the rigidity of the connection of a fork type rear rocker arm and a vehicle frame, reducing the rolling and swinging amplitude of the vehicle, obviously improving riding comfort and stability and having higher safety. Meanwhile, the rear shock absorption of the parallel double-damper structure obviously improves the bearing capacity of the vehicle, so that the electric vehicle can be specially used for pulling and carrying goods.

The rear shock absorbing device has a simple structure, is convenient to assemble and disassemble, and is beneficial to the production assembly and the later maintenance of vehicles. Meanwhile, the device has low manufacturing cost, and is beneficial to reducing the manufacturing cost and the use cost of the whole vehicle. In addition, the damping size of the device can be adjusted by loosening and tightening the adjusting nut 5, and when the load is large, the damping spring 6 can be further compressed by loosening and tightening the adjusting nut 5, so that the rear damping is increased to improve the bearing capacity of the vehicle; when the load is relatively small, the damping spring 6 can be properly loosened by loosening and tightening the adjusting nut 5, so that the rear damping is reduced to improve the shock-absorbing capacity of the vehicle, and the vehicle damping device is simple to operate and convenient to use.

Further, referring to fig. 2, the lower end of the damper spring 6 of the rear damper device of the present utility model is indirectly abutted against the lower yoke plate 2 through the damper rubber pad 7.

According to the utility model, the damping spring 6 is separated from the lower yoke plate 2 through the damping rubber cushion 7, so that the lower end of the damping spring 6 is prevented from being directly abutted against the lower yoke plate 2, friction between the spring and the lower yoke plate 2 is reduced, friction loss between the spring and the lower yoke plate 2 is reduced, the service life of rear damping is prolonged, and the added damping rubber cushion 7 further improves the riding comfort and stability of a vehicle.

Further, referring to fig. 1 to 3, the rear shock absorber of the present utility model further includes a protection sleeve 42 disposed on each connecting rod 4 and movably sleeved outside the outer wall of the cylinder 3, a bottom sealing end of the bottom of the protection sleeve 42 is fixedly connected to the lower end of the connecting rod 4 coaxially, an opening end of the upper portion of the protection sleeve 42 is movably sleeved outside the cylinder 3 and the connecting rod 4 and is located within the caliber of the shock absorbing spring 6, and the bottom of the protection sleeve 42 is movably abutted on the shock absorbing rubber pad 7 as a stopping structure after being actually assembled. The bottom of the protection sleeve 42 of each connecting rod 4 is fixedly connected with a connecting rod fixing screw rod 43 with a diameter smaller than the outer diameter of the protection sleeve 42 coaxially, and the cushioning rubber cushion 7 is movably sleeved on the connecting rod fixing screw rod 43. In cooperation, two connecting rod fixing hole sites 22 positioned on two sides of the lower lifting lug seat 21 are correspondingly arranged on the long axis position of the lower connecting plate 2 body, and a connecting rod fixing screw 43 is correspondingly inserted into the connecting rod fixing hole sites 22 during actual assembly until the bottom of the protection sleeve 42 clamps the cushioning rubber cushion 7 on the upper surface of the lower connecting plate 2, and then the connecting rod 4 is locked and fixed on the lower connecting plate 2 through a connecting rod locking nut 44.

It should be noted that the open end of the protection sleeve 42 is positioned not higher than the piston body 41 of the connecting rod 4, and the open end of the protection sleeve 42 does not interfere with the slack adjuster nut 5 when the damper spring 6 is compressed to the limit position.

The connecting rod 4 of the rear shock absorber is in a retreating structure with the protective sleeve 42, is detachably connected with the lower connecting plate 2 through the connecting rod fixing screw 43, the connecting rod fixing hole site 22 and the connecting rod locking nut 44, clamps and fixes the cushioning rubber pad 7, has a simple structure and is convenient to assemble and disassemble, the protective sleeve 42 not only plays a role in protecting the connecting rod 4 and the cylinder 3, but also assists the piston body 41 to further limit the coaxial line relative movement of the connecting rod 4 and the cylinder 3, the rear shock-absorbing spring damper is prevented from deflecting during riding, and the connection rigidity between the frame of the electric vehicle and the rear rocker arm is ensured.

Further, referring to fig. 2, each cylinder 3 of the rear shock absorber of the present utility model is provided with an oil filling hole 33 for filling the lubricant into the inner cavity of the cylinder 3, and each oil filling hole 33 is screwed with a detachable oil hole plug 34 for preventing the lubricant in the cylinder 3 from leaking through the oil filling hole 33.

Before actual use, the oil hole plug 34 is taken down, a proper amount of lubricating oil is added into the inner cavity of the cylinder body 3 through the oil hole 33, then the oil hole plug 34 is plugged on the oil hole 33, the injected lubricating oil can increase the lubricating degree between the piston body 41 of the connecting rod 4 and the inner wall of the cylinder body 3, and the friction force between the piston body 41 and the inner wall of the cylinder body 3 in the process of reciprocating movement of the connecting rod 4 along the axial direction of the cylinder body 3 is reduced.

Further, referring to fig. 1, the upper lifting lug seat 11 and the lower lifting lug seat 21 of the upper and lower yoke plates are respectively provided with the knuckle bearing 8, after assembly, the upper and lower yoke plates 1 and 2 can be adaptively adjusted by the arranged knuckle bearings 8, compared with the up-and-down swinging amplitude of the frame and the rear rocker arm, the comfort and the stability in the riding process of the vehicle are improved, the friction at the joint of the lifting lug seat and the frame and the rear rocker arm is reduced by the added knuckle bearings 8, the reliability of the connection of the rear shock absorption and the frame and the rear rocker arm is improved, and the service life of the vehicle is prolonged.

Further, referring to fig. 3, an oil seal 9 is further provided in the cylinder 3 of the device of the present utility model, which is sealed between the expansion hole 31 and the body of the connecting rod 4, and the oil seal 9 prevents the lubricant in the cylinder 3 from leaking out through the expansion hole 31, so as to prevent the foreign matters such as external dust from entering the inner cavity of the cylinder 3 through the expansion hole 31.

Further, referring to fig. 1 to 3, the upper end of the cylinder 3 of the device of the present utility model is coaxially and fixedly provided with a cylinder fixing screw rod 35, two cylinder fixing hole sites 12 respectively located at two sides of the upper lifting lug seat 11 are correspondingly provided on the long axis position of the upper yoke plate 1 body, the lower end of the cylinder fixing hole site 12 facing the cylinder 3 is of a countersunk hole structure, and the countersunk hole structure is used for limiting and clamping the upper end of the cylinder 3 and inserting the cylinder fixing screw rod 35. During actual assembly, the cylinder fixing screw 35 is correspondingly inserted into the cylinder fixing hole site 12 until the upper end of the cylinder 3 is correspondingly and limitedly clamped in a counter bore structure at the lower end of the cylinder fixing hole site 12, and then the cylinder 3 is detachably connected with the upper yoke plate 1 through the cylinder locking nut 13.

The device of the utility model limits and clamps the upper end of the cylinder body 3 through the counter bore structure of the cylinder body fixing hole site 12, thereby not only playing the role of a backstop structure, but also avoiding the tilting of the cylinder body 3 in the axial direction, reducing the radial acting force born by the cylinder body fixing screw rod 35 and ensuring the connection reliability of the cylinder body 3 and the upper yoke plate 1.

In this embodiment, the technical content of the present utility model is described by taking the case where the cylinder is fixed to the upper yoke plate and the link is fixed to the lower yoke plate as an example, and in other embodiments, the cylinder may be fixed to the lower yoke plate and the link may be fixed to the upper yoke plate.

The foregoing examples are only for the purpose of clarifying the technical solution of the present utility model, and are not intended to limit the embodiments of the present utility model. Various modifications and alterations of this utility model will be apparent to those skilled in the art without departing from the spirit and substance of this utility model, and it is intended to cover all such modifications and alterations as fall within the true scope of this utility model.

Claims (8)

1. The utility model provides a damping device behind two dampers that side by side of electric motor car, corresponds the both sides of connecting at frame and fork back rocking arm of electric motor car, its characterized in that includes:

the upper yoke plate is fixedly connected to one side of the frame through an upper lifting lug seat;

the lower yoke plate is fixedly connected to the same side of the fork-type rear rocker arm through a lower lifting lug seat;

two cylinders, one end of which is connected with the upper connecting plate or the lower connecting plate in parallel, the outer wall of the end is provided with an adjusting thread, and the other end is provided with a telescopic hole communicated with the inner cavity of the cylinder;

one end of each connecting rod is movably inserted into the inner cavity of the cylinder body through the telescopic hole, and is in sliding connection with the inner wall of the cylinder body through the piston body, and the other end of each connecting rod is connected with the lower connecting plate or the upper connecting plate in parallel;

the two tightness adjusting nuts are respectively connected to the cylinder body through the adjusting threads and can adjust the position along the long axis direction of the cylinder body;

two damping springs are respectively and movably sleeved outside the cylinder body and the connecting rod, one end of each damping spring is elastically abutted on the elastic adjusting nut, and the other end of each damping spring is elastically abutted on the lower connecting plate or the upper connecting plate.

2. The rear shock absorbing device for the parallel double dampers of the electric vehicle according to claim 1, wherein the other end of the shock absorbing spring is indirectly abutted against the lower yoke plate or the upper yoke plate through a shock absorbing rubber pad.

3. The rear shock absorbing device of a parallel dual damper for an electric vehicle as set forth in claim 2, further comprising:

the protection sleeve is coaxially and fixedly connected with the other end part of the connecting rod, the bottom of the protection sleeve is movably abutted on the cushioning rubber cushion to be used as a retaining structure, and the opening end of the protection sleeve is movably sleeved outside the cylinder body and the connecting rod and is positioned in the caliber of the damping spring;

connecting rod fixing screw, coaxial line set firmly in outside the back cover end of protection sleeve, through connecting rod lock nut with lower yoke plate or last yoke plate detachably connect, cooperate, be equipped with on lower yoke plate or the last yoke plate:

the connecting rod fixing hole positions are correspondingly positioned on two sides of the lower lifting lug seat or the upper lifting lug seat and are used for being inserted into the connecting rod fixing screw rod.

4. The rear shock absorbing device for a parallel dual damper of an electric vehicle according to claim 3, wherein the opening end of the protection sleeve is not higher than the piston body of the connecting rod, and the opening end of the protection sleeve does not interfere with the tension adjusting nut when the shock absorbing spring is compressed to a limit position.

5. The rear shock absorbing device for a parallel double damper of an electric vehicle according to claim 1, wherein the cylinder is provided with:

the oil filling hole is positioned on the side wall of one end of the cylinder body, is communicated with the inner cavity of the cylinder body and is used for filling lubricating oil into the cylinder body;

and the oil hole plug is plugged on the oil injection hole and is used for preventing the lubricating oil from leaking.

6. The rear shock absorbing device of an electric vehicle of claim 1, further comprising:

and the joint bearings are respectively embedded into the lifting lugs of the upper lifting lug seat and the lower lifting lug seat.

7. The rear shock absorbing device of an electric vehicle of claim 1, further comprising:

the oil seal is arranged in the cylinder body and is blocked between the telescopic hole and the connecting rod.

8. The rear shock absorbing device for a parallel double damper of an electric vehicle according to claim 1, wherein the cylinder is provided with:

barrel fixing screw, fix in the barrel outside the one end coaxially, through barrel lock nut with last yoke plate or lower yoke plate detachably connect, cooperate, be equipped with on last yoke plate or the lower yoke plate:

the cylinder fixing hole positions are correspondingly positioned on two sides of the upper lifting lug seat or the lower lifting lug seat, one end of the cylinder fixing hole positions facing the cylinder is of a countersunk structure and is used for limiting and clamping the end part of the cylinder and plugging the cylinder fixing screw.